[honkomees]

eks kõik happed toimivad enam-vähem rooste vastu, äädikhape, oblikhape aga enim kasutatav on fosforhape, absoluutne enamik poes müüdavaid roostemuundureid on tegelikult ortofosforhappe baasil, lisaks ka nt köögis kasutatav Cillit Bang ja igasugu muud katlakivi eemaldajad. 

Cllit Bang Grime and Lime Spray (known in some countries as Easy off Bang/Bam Power Grime and Lime Cleaner Trigger) product icontains two acids: sulfamic acid and phosphoric acid. Phosphoric acid (also known as orthophosphoric acid or phosphoric (V) acid) is a weak mineral acid with the chemical formula H3PO4 and applied to rusted iron or steel tools or surfaces to convert iron (III) oxide (rust) to a water-soluble phosphate compound.